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This launch controller can be used with low voltage battery igniters, which fire rocket engines in model rockets such as the Estes range. These circuits are electrical, only switches and contacts are involved. First the circuit for a single rocket: The only....
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Even as display devices move toward digital video, they retain the legacy of an RF-modulated analog TV output. That output is specified in the US by the National Television Standards Committee (NTSC), and utilized in security applications and in the Digital....
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The Intersil ICL32XX devices are 3. 0V to 5. 5V powered RS-232 transmitters/receivers which meet ElA/TIA-232 and V. 28/V. 24 specifications, even at VCC = 3. 0V. Targeted applications are PDAs, Palmtops, and notebook and laptop computers where the low....
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This is a small tv transmitter circuit wich trasmittes in VHF, negative sound modulation and PAL video modulation. It is suitable in countries where the B and G system is used. T1 which type of transformer. what is C1 value. what means of letter P which in....
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Using the ISL8012 high efficiency, monolithic, synchronous step-down DC DC converter can be designed a very simple DC DC converter electronic project that can support a maximum output current up to 2A (continuous output current ) from a 2. 7V to 5. 5V input....
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An RF condenser design, it was powered by 12v, supplied to the microphone via the mike cable using a phantom circuit. This is the first known usage of a phantom circuit for microphone powering[1]. Sometime around 1970, Neumann introduced the Fet-80 series of....
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Use this fm antenna amplifier in areas where the signal reception of FM stations is too bad. This circuit is just the right thing to do it. It is designed...
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This is a well designed basic FM transmitter that you can easily recive the signals transmitted from this transmitter in a 1-2km range with using a normal FM reciever. Another property of this circuit is that the bobin is placed on the printed circuit board.....
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The TDA7010T is a monolithic integrated circuit for mono FM portable radios, where a minimum on peripheral components is important (small dimensions and low costs). The IC has an FLL (Frequency-Locked....
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This simple 220V power interface is intended as an interface for monitoring electric equipments and devices using a computer. The interface only senses whether the device being monitored is turned on or off. The most important aspect of the circuit is the....
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The frequency is controlled by the pin 5 of the IC. When the supply is switched ON, the capacitor charges slowly and this alters the voltage at pin 5 of the IC hence the frequenct gradually increases. After the capacitor is fully charged, the frequency no....
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This is a simple circuit for automatic switchover between battery and USB port. This circuit uses more general step-up converter architecture. Compared with an....
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A difficult problem in the design of conventional stereo tone controls is obtaining synchronous travel of the potentiometers. Even a slight error in synchrony can cause phase and amplitude differences between the two channels. Moreover, linear potentiometers....
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The open-loop concept of oscillator design is often met with considerable skepticism by engineers familiar with classic oscillator terminology. For comfort consider Figure 2-4A where the oscillator cascade is drawn with only the RF components. Next, the....
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Control a little 5v motor from an external power supply by using the Arduino to trigger a transistor. Like this: Is that at all correct Will it work I want to experiment but I don`t want to break my new toy in the process. The transistor I am using is an....
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Until Willow Garage was acquired, I was working there as a Web Robotics Engineer. Really, it`s just a title I gave myself for a full-stack engineer who deals with the issues of real-time, distributed robot control. I`m on GitHub, of course. My most popular....
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Place the transmitter about 10 feet from a FM radio. Set the radio to somewhere about 89 - 90 MHz. Walk back tothe FM transmitter and turn it on. Spread the winding of the coil apart by approximately 1mm from each other. No coilwinding should be touching....
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A simple yet accurate automatic, regulated 6/12/24 volt lead acid battery charger circuit is explained in this article. The circuit switches off the current to the battery as soon as the battery reaches full charge. An illuminated LED at the output....
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This is a fairly simple schematic of the amplifier and filter. At the core of the circuit is an LM124 op-amp running in an inverting configuration. Th....
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This circuit uses the popular and easy to find LM3914 IC. This IC is very simple to drive, needs no voltage regulators (it has a built in voltage regulator) and can be powered from almost every source. When the test button is pressed, the Car battery voltage....
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This circuit also prevents the shutdown circuit of the IR2161 from operating in the normal way and therefore the external SCR based protection circuit also needs to be added. ..
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This project started from seeing pages describing arcstarters that could be constructed for practically no cost from stuff just laying around in the typical tinker`s shop. It has been a fun project, but I have a basement crammed full of stuff and I still had....
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The following circuit shows about Chevrolet Malibu 1997 Electrical Wiring Diagram. Features: 2.4L (VIN T) Engine Performance Circuits,. Component: ....
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A lot of FM transmitter circuits have been already published here. This just another one, a simple two transistor FM transmitter. The first stage of the circuit is a preamplifier stage based on transistor Q1. This is a collector to base biased amplifier....
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Below is two single ended circuits which connected back to back give differential input. This circuit is not only has differential input feature, but also high impedance, much higher compared with the analog ammeter without this circuit. Here is the....
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IR2156 can offer solution of high cost-effectiveness for fluorescent electron ballast. It can integrate lighting tube error protection and the programmable working frequency with warm-up, lighting and ballast continue working...
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Laser-receiver circuits must bias their avalanche photo diodes (APD) to achieve optimal gain. Unfortunately, an APD""s gain depends on the operating temperature. The circuit controls the operating voltage of an APD over a large temperature range to maintain....